Improvement in shingle-machines



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TO ALL WHOM IT MAY CONCERN: i Y y Beit' known that I, ALBERrTnoMPsoN, of Ridgway, `in .the county of1 Elk, and Stateof Pennsylvania,

'have invented a new and improved Shingle-Machine; and I do herebyideclare that the following is a full, clear, and exact descriptionof the construction and operation of the sumo, reference beinghad to the annexed draw' ings, making a part ofthis specification, in whichi 4I Il, are caused to slide back andv forth over the horizontal saw- H.-

Figurcl is a longitudinal vertihal section. l,

Y Figure 2 isa similar section of the `carriage through the `line :c xof hg. 3.

Figure 3 is a plan. Figure 4 is a side elevation of the wheels detached.-

In this invention the carriages areattached by a new device, by means of which one of them can be detached' and stopped, for adjusting the bolt, without nterferingwithvtlfc action of the other. The heading and vpointing are also regulated by a new mechanical arrangement,` and 'a new apparatus .is employed for adjusting the spe-ed of the carriages.

Y In the drawings, A represents the wooden framework of the machine; AB is-thesaw-mandrel; 1?1 a'tapering or conical vertical pulleyon -the saw-mandrel; C, a similar pulley, tapering in the.y opposite direction, and, standing near the end ofthe machine; B, a beltconnecting the pulleys IBl and C, -D, a verticall shaft at endpof the machine, receiving motion' from the pulley/1C by means of,gearing,lc chaud communicatingsaid- `motionpby other vgearingzz'cs, to a'horizontal shaft,-E, extending across the end of the machine; and .EF

wheels, running"on the vend's'otf the shaft E, andeach carrying ahorizontal pitman, G G, by whichthe'carriages,"

'.lhe carriages runfon slide-bars, K K, and are drawnback and forth bybeing attached to a beam, L, which extends across the machine from one slidefbar to the other, and itself slides on the bars in the same direction, as the carriages, being actuated by the pitmen which are connected with its extremities; crjthe pitmen may be eachconnected-with sliding blocks, J @running on the slide-bars on each side of the machine, and the ends of the Abeam-L may be fastened firmly to these blocks. 'The latter is the method of construction shown in the drawings, y l

The means for'attaching 4the carriages to the beam, L, which. draws them' back and forth, is'as follows: Between two small 'horizontal metallic platesaretwobarbed dogs, mm, pivoted at their middle,',and having a spring, m1,' to drawtheir heads together, anda cord, m2, by whiclnby means of a spindle and hand-wheel, the

ends opposite to thel heads may, at pleasure, be drawn together, and the'heads thrown apart. Corresponding to these' dogs, is a double-barbed couplingholh'm, with bevelled head, ixed to the side of the carriage, so that when the carriage andthe beam Ii-'come together-,the bevelled head, m3, will enter between the dogsm m, and,pus'h them apart, until the barbs or shoulders on the sides of the'bolt catch behind the teeth of the .dogs,when the carriage will be -rmly attached to the sliding beam, and will be drawn and forth by it. By giving the hand-wheela turn, the dogs may be thrown apart, and the carriage liberatedfrom the sliding beam. Each earriage is provided with this arrangement, so that either mayat any time be vdetached from the running-apparatus, and held at thc'end of the machine, at pleasure, for .the purpose of ychanging or adjusting the bolts.

The bolt is held between two shafts, N N', each provided with a series of spur-wheels, n, which prevent the bolt from slipping down between theshafts any faster than the rotation of the shafts is designed to allow to move. One shaft, N', is xed in position, the other, N, bears in a sliding'frame, O which slides from theA end' towards the centre of the carriage, or vz'ce versa, being impelled towards the middle ofthecarriage by springs,

o o, and a little shaft, P, connected with the sliding frame by a cord, or by aspu'r-wbeel gearing into a rack onthe frame,"being provided for the purpose of enabling the operator to retract the shaft N when he desires to take out the yold bolt or put a new one in. i

The rotation of the shafts N N', which hold the bolts, is so adjusted, that` at every alternate return of the carriage, one shaft moves farther round thanV the other, and drops its end of the `bolt farther, forming the head of the shingle, while the point is formed at the other` end ofV the bolt; and, at the next returnof the carriage,

lthe operation is reversed, and the point formed the end ci'v the bolt whcrethe head was formed before.

In order to make the shafts rotate in 'this manner, they are both put in motion by a single-shaft, R, by means of cam-wheels S Son'said shaftj gearing into and turning spur-wheels `n n', on the end of the shafts N N. The form and arrangement of the cams on the camwhcels are shown clearly at 8X 3X s s, in figs. 2 and 4.

The spurs 1,-2, 3, 4, 5, 6, 7, 8, 9, Q, on the spur-wheels n n', are arranged atrdiiferent distances apart, the,

distance from 1 to 2 being so little that if the cam s run between those spurs, 'the shafts N N will be turned only far enough to form thepoint of theshingle, but if the cam run between the spurs 2 and 3, the shaft will turn far enough to form the head of the shingle. A lever, T, pivoted on the shaft R, and having a weighted hand, t, to keep vit in position, at each returnV of the carriage to the end of the machine, strikes against or runs under a staple, T1, throwing the'head of the lever up, and. causing it to Vpartially rotate the 'shaft R by means of a dog, t', on its side, working in a ratchet-wheel, T2, attached to the shaft. The partsare so constructed, that the rotation thusimparted to the shaft is just suicient to cause one of the cams, s, to operate through its whole length on thespuriwheel, n', leaving the next return of the' .carriage to operate the next cam,

and so on. And the cams are' so 4adjusted to the spurs of the wheels n n', that one com will run` its whole length between two spurs, as, for instance, those numbered 1 and 2, and then the next cam will catch between the next two, 2 and 3, and so on'indcinitely..4 By this means every successive return of the carriage to the end of the machine sets the bolt fora new cut, adjusting it so that the shingles are headed and pointed with perfect accuracy at both ends of the bolt. K

In order to accommodate ene-of the cam-wheels tothe sliding shai't N; I malte the cam-wheel itself movable along the shaft that carries it, cutting a'. bead in the shaft and invcentral aperture of the wheel toprevent the turning of the latter on its shaft, and 4extending an am,'o, from the sliding frame O to the side of the camwheel, where it may be looped around the shaft R. to hold it more steadily. In this way Vthe cam-wheel will be held between the arm v, and .the spurwheel-'n',` in whatever direction the frame O and shaft N may be movd,

and will thus be always kept-,in the proper connection with the spurlwheel which it'is designed to aetnatc.

. The speed with which the carriages will move is regulated by m'eans of thetwo conical "pulleys, B" C. By sliding the belt up to thetop of the pulleys, the speed of the carriages will be increased, andby sliding it down. diminished. In order to adjust the belt more readily, I cause it to pass throughaslotted plate, p, held at the end of an arm or pair of arms, a, projecting from a rock-shaft, W, which extends across the machine under the saw, andwhich can he partially rotated by a lever, W', at lthe side of the machine, connected with a crank, '10,

on the end ot"`the 'rock-shaft by a rod, w. :ByV throwing the handle of this lever back and forth, the. slotted platep is raised or depressed, carrying the belt B? up or down' with it. i

Q is a lever, by which the spur-wheels c c may be thrown out of gear, in order to stop the motion of both carriages at once. Y

Having thus described my inve' .on, what.I claim as new, and desire to secure by Letters Patent, is

1. I claim the combination ofthe carriages I Il, having the'bar-bed coupling-bolt m3, with the barbed dogs 'in m, spring m1, and cord and pulley m2, by which either` of the carriages can, independently of the other, be

instantly attached to or. detached from 'the sliding beam L which operates them.

2. I claim the combination of thecam-wheels S, having the cams s s s s formed ,and operating in the nranl ner `described, with the shaft N, having the spur-wheels 'n' n', thc'spurs of which 4are at different distances apart, the whole operating together in the manner and for thc purposes set forth.

To the above specification of my invention I have signdmy hand, this 6th day of February,` 1868.

` ALBERT THOMPSON.

Witnesses SoLoN C. KEMON, CHARLES A. Pnr'rrr. 

